François Mayoux (24 June 1882 – 21 July 1967) was a French teacher who became in turn a socialist, communist and revolutionary syndicalist.

[2] The International Action Committee (CAI: Comité d'action internationale) was founded in December 1915 by French syndicalists who supported the pacifist declarations of the Zimmerwald Conference.

The socialists Fernand Loriot, Charles Rappoport, Louise Saumoneau and François Mayoux took control of the committee.

[5] In 1917 the Mayouxes were condemned to two years in prison and a heavy fine for published a pacifist brochure entitled "The Teachers Union and the War".

[3] Marie and François Mayoux were expelled from the PCF at the Party congress held in Paris from 16–19 October 1922 as "unrepentant sydicalists".

At the start of World War II (1939–45) their son Jehan Mayoux, who shared his parents' pacifist convictions, refused conscription and was imprisoned.